CN110817554A

CN110817554A - Novel tension control device of COF splitting machine

Info

Publication number: CN110817554A
Application number: CN201911136728.6A
Authority: CN
Inventors: 张涛; 计晓东; 孙彬; 沈洪; 李晓华
Original assignee: Jiangsu Shangda Electronics Co Ltd
Current assignee: Jiangsu Shangda Electronics Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-02-21

Abstract

The invention provides a novel tension control device of a COF (chip on film) splitting machine, and relates to the technical field of COF splitting. This novel COF cutting machine tension control device, including first leading wheel and second leading wheel, the centre of first leading wheel and second leading wheel is provided with the tension pulley, the lateral wall fixed mounting of tension pulley has the bracing piece, the surface of bracing piece is provided with the fulcrum, the tip of bracing piece and the top that is located the fulcrum are provided with the weight, the upper and lower end of bracing piece all is provided with sensor and spacing buffer, the left side of first leading wheel is provided with rolls up the dish, the right side of second leading wheel is provided with first sprocket and second sprocket. According to the invention, by using the novel tension device, the warping, size change and the like of COF products caused by overlarge tension can be effectively avoided; the contact area between the COF product and the tension roller is reduced, and the defects of scratch, marking and the like caused in the processing process are reduced.

Description

Novel tension control device of COF splitting machine

Technical Field

The invention relates to the technical field of COF slitting, in particular to a novel tension control device of a COF slitting machine.

Background

COF slitting is that conveying and positioning are carried out through square sprocket tooth holes with the diameters of 1.42mm and 1.981mm which are designed on two sides of COF products, a 158mm COF is cut into single products with the diameters of 35mm, 48mm and 70mm by corresponding cutter groups, the 158mm COF wide products are placed on a winding shaft, the products pass through a gravity wheel, equipment replaces an upper cutter group and a lower cutter group and a roller wheel which correspond to the width of the single product, the sprocket tooth holes of the square sprocket are sleeved into a sprocket wheel and a lower cutter group sprocket wheel of a slitting machine, the products are positioned and conveyed through prismatic sprocket teeth, and operation is started after parameters are adjusted.

Traditional cutting machine tension control, product follow tension pulley below process, and tension pulley even has the weight of certain weight, rises to the sensor or descends to the position of sensor when tension pulley, and one of them sensor catches the signal after and feeds back to drive control unit and adjusts the roll-off end, cut unit speed regulation tension, but the device has following defect:

1. the tension device has relatively large contact area between the product and the roller, and the product is 158mm wide before being divided, so that the contact area is too large, and the product is easily scratched, marked and the like.

2. As the 158mm wide COF product has three single product specifications of 35mm, 48mm and 70mm, the copper retention rate, 4 inner conveying holes and the width are different, so that the single products with different widths bear different tension; the weight of the tension device is sealed inside the equipment, and the tension is changed more complexly. The COF packaging structure is suitable for a single dividing and cutting machine to cut COF products with fixed number, and cannot simultaneously correspond to three products of 35mm, 48mm and 70 mm.

3. The tension device is of an up-down floating type, the two sensors are used for sensing a protection device which is usually required to be a cuboid for receiving a reflection signal and avoiding external interference, the relative size is large, and the operation is relatively complex.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a novel tension control device of a COF splitting machine, which solves the defects and shortcomings in the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a novel COF cutting machine tension control device, includes first leading wheel and second leading wheel, the centre of first leading wheel and second leading wheel is provided with the tension pulley, the lateral wall fixed mounting of tension pulley has the bracing piece, the surface of bracing piece is provided with the fulcrum, the tip of bracing piece and the top that is located the fulcrum are provided with the weight, the upper and lower end of bracing piece all is provided with sensor and spacing buffer, the left side of first leading wheel is provided with rolls up out the dish, the right side of second leading wheel is provided with first sprocket and second sprocket, the top of second sprocket is provided with the sword, the surface of second sprocket is provided with the lower sword, the right side of second sprocket is provided with first volume and gets dish and second and batches the dish.

Preferably, the first sprocket is located at a position intermediate the second guide wheel and the second sprocket.

Preferably, the weight has a weight of 1-10kg, preferably 5kg, a height of 7.5cm, and is a cylinder.

Preferably, the weight of the tension pulley is 100-500g, preferably 300g, the width is 158mm, and the distance from the tension pulley to the fulcrum is 5-50cm, preferably 30 cm.

The working principle is as follows: put the traction band at the book of rolling out, the traction band is through first leading wheel, tension pulley, the second leading wheel, open the last knife tackle and put into the traction band, the adjustment knife tackle position, begin to cut, after waiting to cut certain length, use the sticky tape adhesion to the coiling dish the traction band after cutting, cut out the traction band at the book end, take off a roll of out end traction band, then put into the book end to the product of waiting to cut, it is waiting to cut the product with the sticky tape connection, can begin to cut, follow-up treat cut the product on the computer cut only need be connected to the tail end of last volume of product can.

(III) advantageous effects

The invention provides a novel tension control device of a COF splitting machine. The method has the following beneficial effects:

1. by using the novel tension device, the warping, size change and the like of COF products caused by overlarge tension can be effectively avoided; the contact area between the COF product and the tension roller is reduced, and the defects of scratch, marking and the like caused in the processing process are reduced.

2. Compared with the traditional tension device, the novel tension device is free of a protective shell and is relatively convenient to operate.

3. Through using neotype tension device, only need to adjust the weight position to the single strip article scale mark that corresponds the broad width, just can accomplish that a cutting machine need not change other configurations and remove the COF product of cutting 35mm, 48mm, 70 mm.

4. Through using neotype tension device to add the footpath calculation mode of rolling up, it is more sensitive to the control of speed, and tension control precision becomes high, and the precision of cutting becomes high.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Wherein, 1, a first guide wheel; 2. a second guide wheel; 3. a tension pulley; 4. a support bar; 5. a fulcrum; 6. a weight; 7. a sensor; 8. a limiting buffer; 9. rolling out the disc; 10. a first sprocket tooth; 11. a second sprocket tooth; 12. feeding a cutter; 13. cutting; 14. a first take-up reel; 15. a second take-up reel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1, an embodiment of the present invention provides a novel tension control device for a COF splitting machine, including a first guide pulley 1 and a second guide pulley 2, a tension pulley 3 is disposed between the first guide pulley 1 and the second guide pulley 2, a support rod 4 is fixedly mounted on an outer side wall of the tension pulley 3, a fulcrum 5 is disposed on an outer surface of the support rod 4, a weight 6 is disposed at an end of the support rod 4 above the fulcrum 5, sensors 7 and limiting buffers 8 are disposed at upper and lower ends of the support rod 4, a take-up reel 9 is disposed at a left side of the first guide pulley 1, a first sprocket 10 and a second sprocket 11 are disposed at a right side of the second guide pulley 2, the first sprocket 10 is located at a middle position between the second guide pulley 2 and the second sprocket 11, an upper knife 12 is disposed above the second sprocket 11, a lower knife 13 is disposed on a surface of the second sprocket 11, and a first take-up reel 14 and a second take-up reel 15 are disposed at a right side of the second sprocket 11.

In the invention, a lever principle is applied, a weight 6 with a certain weight is applied to the outer end of the fulcrum, the tension force applied to a product by the tension wheel 3 is adjusted by adjusting the force arm from the weight 6 to the fulcrum 5, and the tension fluctuation during acceleration and deceleration is absorbed by the change of the angle of the support rod 4.

The sensor 7 is arranged at the upper end and the lower end of the supporting rod 4, when the tension pulley 3 rises or falls to the upper limit or the lower limit, the sensor 7 receives a signal and feeds the signal back to the driving control unit of the slitting part of the slitting machine, the driving control unit of the slitting part increases or decreases the conveying speed of equipment so as to generate speed difference between the unwinding unit and the driving unit of the slitting part, and the purpose of adjusting tension is achieved, the elastic limiting buffer 8 is arranged beside the sensor 7, the tension device is prevented from touching the sensor 7 under the action of the limiting buffer, the sensor 7 is a distance measuring sensor, a laser distance measuring sensor is recommended, and the laser distance measuring sensor has the advantages of good monochromaticity, strong directivity, high distance measuring precision and.

The tension applied to the COF product can be adjusted by adjusting the distance between the weight 6 and the fulcrum 5, the weight 6 is 1-10kg, preferably 5kg, the height is 7.5cm, the weight 6 is a cylinder, I is the distance between one side edge of the weight 6 and the fulcrum 5, K is the distance between the other side edge of the weight 6 and the fulcrum 5, the distance between the weight 6 and the fulcrum 5 can be changed according to the number of items of the COF product, the position of the sensors 7 on two sides is fixed, the weight of the tension pulley 3 is 500g, preferably 300g, the width is 158mm, and the distance H between the tension pulley 3 and the fulcrum 5 is 5-50cm, preferably 30 cm.

The specific parameters are shown in the following table 1:

TABLE 1

In the invention, in order to improve tension control and ensure slitting precision, a winding diameter calculation mode is added at a winding-out end and a winding-up end, the rotating speed of a winding shaft is detected, the diameter of the winding diameter can be changed by 2 times of the thickness of a raw material every time the winding shaft rotates, the diameter is calculated according to driving time and speed, the current diameter of the winding shaft is obtained through accumulated calculation according to the set initial value of the diameter of the winding shaft and the material thickness, the change of the corresponding winding diameter reflects the change of an actual tension value, the tension value is gradually reduced along with the increase of the winding diameter, the tension of a COF product with the length of 100m is generally reduced from 10N to 6N at the winding-out end, and the tension of the.

Put the traction band at the reel-out 9, the traction band is through first leading wheel 1, tension pulley 3, second leading wheel 2, open the upper knife tackle and put into the traction band, the adjustment knife tackle position, begin to cut, after waiting to cut certain length, use the sticky tape adhesion to batch on the end reel to the traction band after cutting, cut off the traction band at the reel-out end, take off the reel-out end traction band, then put into the reel-out end to waiting to cut the product, treat with the sticky tape connection and cut the product, can begin to cut, it only need be connected to the tail end of last volume product to follow-up treat cutting the product on-machine cut can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel COF cutting machine tension control device, includes first leading wheel (1) and second leading wheel (2), its characterized in that: a tension pulley (3) is arranged between the first guide pulley (1) and the second guide pulley (2), a supporting rod (4) is fixedly arranged on the outer side wall of the tension pulley (3), a fulcrum (5) is arranged on the outer surface of the supporting rod (4), weights (6) are arranged at the end part of the supporting rod (4) and above the fulcrum (5), the upper end and the lower end of the supporting rod (4) are respectively provided with a sensor (7) and a limiting buffer (8), a winding-out disc (9) is arranged on the left side of the first guide wheel (1), a first chain wheel tooth (10) and a second chain wheel tooth (11) are arranged on the right side of the second guide wheel (2), an upper knife (12) is arranged above the second chain wheel tooth (11), a lower knife (13) is arranged on the surface of the second chain wheel tooth (11), and a first coiling disc (14) and a second coiling disc (15) are arranged on the right side of the second sprocket (11).

2. The novel tension control device of the COF splitting machine as claimed in claim 1, is characterized in that: the first chain wheel tooth (10) is positioned in the middle of the second guide wheel (2) and the second chain wheel tooth (11).

3. The novel tension control device of the COF splitting machine as claimed in claim 1, is characterized in that: the weight (6) has a weight of 1-10kg, preferably 5kg, a height of 7.5cm, and the weight (6) is cylindrical.

4. The novel tension control device of the COF splitting machine as claimed in claim 1, is characterized in that: the weight of the tension pulley (3) is 100-500g, preferably 300g, the width is 158mm, and the distance from the tension pulley (3) to the fulcrum (5) is 5-50cm, preferably 30 cm.